Lip sync
AI lip sync is re-animating a face's mouth so it matches a spoken audio track. The face stays the same person; only the speech motion is generated.
Lip-sync models read the phonemes in an audio file — the actual sounds being spoken — and generate the matching mouth shapes, jaw movement and micro-expression frame by frame. Good output also carries the timing into the cheeks and eyes, which is what separates convincing speech from a ventriloquist dummy.
A concrete example: you record a 20-second voice memo on your phone, attach it to a headshot, and get back a clip of yourself delivering the lines — useful for multilingual versions of the same video, where the face must match a voiceover recorded in another language.
How Hermosso uses it: Talking Video turns a photo plus a script or audio file into a lip-synced clip, and the UGC Ads studio builds whole creator-style ads around the same capability.
Try it on your own photos
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